DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-791EXP-INTF (Expansion Interface Circuit Pack)
9
Notes:
a. This flashing state corresponds to error codes 769 and 770 from the
Hardware Error Log and indicates a failure of Test #238. These error codes
will usually be accompanied by error code 1281 (no Expansion Interface
or Switch Node Interface detected on opposite end of fiber). This
condition may be caused by the absence of the neighbor Expansion
Interface or Switch Node Interface circuit pack, a broken or missing fiber,
or a missing lightwave transceiver on either endpoint (Expansion Interface
or Switch Node Interface circuit pack).
b. This flashing state corresponds to error code 1281 from the Hardware
Error Log and indicates a failure of Test #237. This condition is usually due
to the failure of this Expansion Interface circuit pack or a failed Expansion
Interface or Switch Node Interface circuit pack neighbor.
c. This is the normal state for an Active EPN Expansion Interface circuit pack
that is also the bus master (Expansion Archangel) in the EPN.
d. This is the normal state for an Active Expansion Interface circuit pack that
is not the bus master (Expansion Archangel) for an EPN. This applies only
in the Direct Connect Configuration where the Expansion Interface circuit
pack in an EPN is connected via a fiber link to an Expansion Interface
circuit pack in the other EPN. This state also applies for an active
Expansion Interface circuit pack located in the PPN.
e. This is the normal state for a Standby Expansion Interface circuit pack in
both the PPN and EPNs.
NOTE:
In an EPN the TN775 EPN Maintenance (MAINT) circuit pack monitors the
sanity of the Expansion Interface circuit pack. If the Expansion Interface
circuit pack should cycle between sane and insane several times, the
Maintenance circuit pack will hold the Expansion Interface circuit pack
reset. If a new Expansion Interface circuit pack is installed in the EPN, and
the red LED remains lit, the EPN Maintenance circuit pack should be
removed because it may be holding the new Expansion Interface circuit
Table 9-305. Expansion Interface Circuit Pack Yellow LED Flashing States
Condition LED On LED Off
Fiber Out-of-Frame (a) 0.1 second 0.1 second
In frame-No Neighbor (b) 0.5 second 0.5 second
Expansion Interface Active (c) 2 second 0.2 second
Expansion Interface Active (d) solid on never off
Expansion Interface Standby (e) never on solid off
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